Karl Barth und der Isenheimer Altar

Published in 1995 by Calwer Verlag, this work by Reiner Marquard explores the profound theological connection between the Swiss theologian Karl Barth and the Isenheim Altarpiece by Matthias Grünewald. Marquard examines how Barth, one of the most influential figures of 20th-century Protestant theology, found in the altarpiece's visceral depiction of the Crucifixion a visual manifestation of his own doctrine regarding God's encounter with human suffering. The book serves as an academic bridge between historical art analysis and systematic theology, grounding the altarpiece within the existential framework of Barth’s post-war intellectual milieu.

The text is part of a broader scholarly tradition that seeks to contextualize Northern Renaissance art through the lens of modern theological discourse. Marquard’s design and editorial approach focus on how the iconic, emotive power of Grünewald's work reflects the 'theology of the cross,' a central pillar of Barthian thought. Upon its release, the book was received primarily within German-speaking academic circles as a nuanced contribution to the study of aesthetics and religion, noted for its disciplined, rigorous interpretation of how historical art can inform and reinforce contemporary theological perspectives.